I need help to delete an account

Hello everyone,

I have made an account in a website which was liberland.org long ago when I was underage but now I cannot delete it, I cannot even disable it or even modify my credentials.

I have found an email in their privacy policy but they do not respond to it and it has been a week already. I didn’t find any information at all that could help online

PS: The account was made around 6 years ago or more, and second note is that I do not live in an European country for GDPR nor in USA for CCPA to benefit from privacy rights